Search found 354 matches

by mcauser
Thu Jan 24, 2019 3:27 am
Forum: ESP8266 boards
Topic: HOW TO PROTECT THE CODE?
Replies: 2
Views: 498

Re: HOW TO PROTECT THE CODE?

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by mcauser
Thu Jan 24, 2019 3:12 am
Forum: ESP8266 boards
Topic: Working with ESP8266 (ESP-07S)
Replies: 1
Views: 135

Re: Working with ESP8266 (ESP-07S)

Should be the same ESP8266EX chip in all of the ESP-xxx modules. Some are configured with more flash memory. Some expose additional pins. Some have a metal can / shielding. See http://esp8266.net/ for more specifics. IPEX / U.FL connectors are only rated for a small number of reconnects. Maybe 20-30...
by mcauser
Thu Jan 24, 2019 3:01 am
Forum: ESP8266 boards
Topic: Lolin board erase everything from flash
Replies: 6
Views: 285

Re: Lolin board erase everything from flash

Could you add a few 5.5V super capacitors acting as a battery/ups and monitor the voltage on the analog pin and flick a relay to power down the device once the voltage drops below a threshold? The relay would be wired normally open, and you'd have to bypass it to boot, but once booted, hold it close...
by mcauser
Thu Jan 24, 2019 2:33 am
Forum: Drivers for External Components
Topic: Is there Ampy alternative?
Replies: 7
Views: 600

Re: Is there Ampy alternative?

I used to have a lot of intermittent problems using ampy with my esp8266s. Fixed by adding this line to my ~/.bash_profile: export AMPY_DELAY=0.5 Also, added this to save typing --port each time: export AMPY_PORT=/dev/tty.wchusbserial1420 And because my MacBook has multiple usb ports, I added aliase...
by mcauser
Fri Jan 11, 2019 3:05 am
Forum: Hardware Projects
Topic: small form factor STMF407 board
Replies: 6
Views: 340

Re: small form factor STMF407 board

Not yet, at least... If you're after tiny boards for your robots, would one of those BetaFlight STM32F405 based flight controller boards be suitable? They don't seem to break out many pins, but are very light and compact and often have useful components like EEPROMs and gyros/accelerometers. What ev...
by mcauser
Thu Jan 10, 2019 10:13 am
Forum: Hardware Projects
Topic: small form factor STMF407 board
Replies: 6
Views: 340

Re: small form factor STMF407 board

Same seller has a STM32F429BIT6 board for ~$45.
by mcauser
Thu Jan 10, 2019 9:50 am
Forum: Hardware Projects
Topic: small form factor STMF407 board
Replies: 6
Views: 340

Re: small form factor STMF407 board

It’s very compact and one of the first I’ve seen with USB-C :) Only minor differences between the pyboard and VET6 defs. See: https://github.com/mcauser/VCC_GND_F407 https://github.com/mcauser/BLACK_F407VE The ZET6 is also similar: https://github.com/mcauser/BLACK_F407ZE And the ZGT6 too: https://gi...
by mcauser
Tue Jan 01, 2019 12:09 pm
Forum: Hardware Projects
Topic: NeoPixel using microPython
Replies: 4
Views: 335

Re: NeoPixel using microPython

by mcauser
Sat Dec 29, 2018 6:46 am
Forum: Other Boards
Topic: My new PYB Nano board is coming
Replies: 34
Views: 9778

Re: My new PYB Nano board is coming

AliExpress is a lot easier to use for English speaking buyers. Using Taobao with Google Translate is extremely difficult. Last time I tried using Taobao, I ended up getting it shipped to a holding warehouse then had to pay another $50 to ship (the $10 board) to Australia. Are you in Sydney @Outofthe...